Jan 9, 2013 12:00am PST
science. there was a moment in the early 90s and that was when i had my first kid. i mean, this is really selfish, you know. i had my first kid and i thought, oh, my gosh. i started learning about what was really going on. they talked about greenhouse. remember, the time magazine said, "what is the greenhouse effect?" there was a moment where we were all really motivated and then i don't know what happened. personally, i think the oil companies and i think that a lot of people whose pockets are lined by them just devastated that conversation. tavis: what do you think it is gonna take for that conversation to get traction with everyday american people? i say the average american because it is not like these issues aren't discussed. it is not like people, you know, can't feel that something in the environment -- whether you understand global warming or climate change or not, it is pretty hard to deny that the weather patterns are changing. i mean, your regular joe can tell that something is happening. >> oh, yeah. ranchers are losing their cattle, they're having to sell their farms.